Patch series

<short summary of the patch>
TODO: Put a short summary on the line above and replace this paragraph
with a longer explanation of this change. Complete the meta-information
with other relevant fields (see below for details). To make it easier, the
information below has been extracted from the changelog. Adjust it or drop
it.
.
perlprimer (1.2.3-1) unstable; urgency=medium
.
00b28ba New upstream version 1.2.3, closes: #708477.
840bfa2 Simplify packaging as .pl suffix was dropped upstream.
90fbf5e Delete patches, applied upstream.
f700242 Remove outdated Watch field in d/u/metadata.
d35bd09 Removed Debhelper file d/perlprimer-doc.dirs (implicit).
c37612a Adapt d/perlprimer.docs to upstream changes.
6ae70e7 Use HTTPS URL for debian/copyright.
a066529 Minor format update of the gbp configuration file.
7cdcd1e Update icon to display full size and be specific to PerlPrimer.